Patents by Inventor Tsun Ding Chen

Tsun Ding Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5836584
    Abstract: A spherical puzzle toy includes a spherical shell, which consists of two semi-spherical shells turned on an axis relative to each other, a plurality of partition panels mounted around the spherical shell and defining three intersected tracks around the spherical base along the X,Y and Z axes, and a plurality of slides marked with different marks and moved in the intersected tracks, and wherein the intersected tracks are switched to one another to change the combination of the slides by turning the semi-spherical shells relative to each other.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: November 17, 1998
    Inventor: Tsun Ding Chen
  • Patent number: 5816571
    Abstract: A spherical puzzle toy includes a spherical shell having six circular recesses disposed on X-axis, Y-axis and Z-axis at two opposite sides, six circular turn plates respectively turnably mounted on the circular recesses and having each a respective crossed track on the outside linked with one another, and a plurality of slides moved in the crossed tracks to form any of a variety of combinations.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: October 6, 1998
    Inventor: Tsun Ding Chen